Police Service AreaPolice Service Area
by Metropolitan Police Department on 20120407
Keywords
About:
boundary, Society, Government Jurisdiction, Metropolitan Police Department, PSA, Police Service area, Public Safety, pubsafety
Taking place at:
Washington, D.C., District of Columbia, DC, DC GIS, DCGIS
Abstract
Metropolitan Police Department (MPD) Police Service Areas (PSA). The dataset contains polygons representing of MPD PSA, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the Chief Technology Officer (OCTO) and participating D.C. government agencies. Police jurisdictions were initially created selecting street arcs from the planimetric street centerlines and street polygons, water polygons, real property boundaries and District of Columbia boundaries.
All DC GIS data is stored and exported in Maryland State Plane coordinates NAD 83 meters.
METADATA CONTENT IS IN PROCESS OF VALIDATION AND SUBJECT TO CHANGE.
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Purpose
This data is used for the planning and management of Washington, D.C. by local government agencies.
Use constraints
Acknowledgment of the DC Geographic Information Systems Program (DC GIS). The District of Columbia Government makes no claims as to the completeness, accuracy or content of any data contained hereon, and makes no representation of any kind, including, but not limited to, the warranty of the accuracy or fitness for a particular use, nor are any such warranties to be implied or inferred with respect to the information or data furnished herein.
Point of contact
GIS Data Coordinator
in D.C. Office of the Chief Technology Officer
441 4th St NW, Suite 930 South
Washington DC, 20001, USA
fax: (202) 727-5660
hours: 8:30 am - 5:00 pm
Credits
Metropolitan Police Department
Data accuracy
Accuracy
Data believed to be complete and accurate as of the time period cited. Subject to change. Digital version compared with original source data for accuracy and completeness. Validated by source and/or responsible agency.
Staff check for boundaries that intersected select planimetric features, such as buildings. Then, staff checked all the text descriptions of the 44 PSA boundaries against the psa arc coverage, snapbase, and street centerlines. MPD also reviewed the PSAs against the planimetrics, text descriptions, and existing files.
Logical consistency
Validated by source and/or responsible agency.
Completeness
Data believed to be complete and accurate, subject to change. Digital version compared with original source data for accuracy and completeness. Validated by source and/or responsible agency.
Horizontal positional accuracy
Validated by source and/or responsible agency.
Vertical positional accuracy
N/A
Lineage / Sources
Lineage / ProcessesExecutive Direct Crime Analysis
in Metropolitan Police Department
300 Indiana Ave NW room 5063
Washington DC, 20001, USA
phone: (202) 727- 4289
hours: 9am - 5pm |
Snapset from 8/1/2011 assembled from the following source layers:
o District BNDY
o RAIL
o RoadPly
o StreetSegmentLn
o WATER
o OwnerPly
Procedure:
1. The reference materials were assembled in the ArcMap 9.3.1 environment. The prj file defined the projection in which arcs were selected to define the PSAs.
2. For arcs that required spatial modifications like splitting, snapping, or drawing in new segments, segments were created in ArcMap.
3. After all the segments that comprise the PSAs were completed, the analyst selected all the arcs and placed into a new coverage. This new coverage was used to QC the selections if there were any segments missing to enclose polygons or self intersecting arcs. Staff performed a build on the coverage to identify arcs with topological errors.
4. The PSA coverage attribute table was then populated with the PSA
5. Staff then saved the changes and the process is completed.
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Distribution
Most DC GIS datasets can be downloaded from "http://dcgis.dc.gov" on the data center page. Orders can also be made by contacting OCTO GIS at "dcgis@dc.gov", especially for datasets not available for download.
Distribution liability
Acknowledgment of the DC Geographic Information Systems Program (DC GIS). The District of Columbia Government makes no claims as to the completeness, accuracy or content of any data contained hereon, and makes no representation of any kind, including, but not limited to, the warranty of the accuracy or fitness for a particular use, nor are any such warranties to be implied or inferred with respect to the information or data furnished herein.
Distributed by
GIS Data Coordinator
in D.C. Office of the Chief Technology Officer
441 4th St NW, Suite 930 South
Washington DC, 20001, USA
fax: (202) 727-5660
hours: 8:30 am - 5:00 pm
Entity
PolSAPly
Attributes
- OBJECTID / ESRI
Internal feature number. - SHAPE / ESRI
Feature geometry. - DISTRICT
Police District Value - PSA
Police Service Area Value - NAME
Police Service Area Name - TOTALPOP
PSA total population - WHITE
PSA total white population - BLACK
PSA total black population - NAT_AMER
PSA total native america population - ASIAN
PSA total asian population - OTHER
PSA total other population - TWO_ORMORE
PSA total two or more household population - HISPANIC
PSA total hispanic population - POPMALE
PSA total male population - POPFEMALE
PSA total female population - PC_MALE
- PC_FEMALE
- POPUNDER18
PSA total under 18 population - POP65UP
PSA total 65 and older population - WEB_URL
Police Service Area Web Link - POLDIST_ID
Police District Identifier - GIS_ID
OCTO GIS sequential Identifier - Shape_Length / ESRI
Length of feature in internal units. - Shape_Area / ESRI
Area of feature in internal units squared.
Metadata
FGDC Content Standards for Digital Geospatial Metadata / FGDC-STD-001-1998 as of 20120427
Provided by
GIS Data Coordinator
in D.C. Office of the Chief Technology Officer
441 4th St NW, Suite 930 South
Washington DC, 20001, USA
phone: REQUIRED: The telephone number by which individuals can speak to the organization or individual.
fax: (202) 727-5660
hours: 9:30 am - 5:00 pm